Update dependency mdformat-mkdocs to v4 (#15011)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
|
[mdformat-mkdocs](https://redirect.github.com/kyleking/mdformat-mkdocs)
([changelog](https://redirect.github.com/kyleking/mdformat-mkdocs/releases))
| `==3.1.1` -> `==4.0.0` |
[![age](https://developer.mend.io/api/mc/badges/age/pypi/mdformat-mkdocs/4.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/pypi/mdformat-mkdocs/4.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/pypi/mdformat-mkdocs/3.1.1/4.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/mdformat-mkdocs/3.1.1/4.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>kyleking/mdformat-mkdocs (mdformat-mkdocs)</summary>

###
[`v4.0.0`](https://redirect.github.com/KyleKing/mdformat-mkdocs/releases/tag/v4.0.0)

[Compare
Source](https://redirect.github.com/kyleking/mdformat-mkdocs/compare/v3.1.1...v4.0.0)

#### What's Changed

- fix!: add newline after title for consistency with MKDocs style by
[@&#8203;KyleKing](https://redirect.github.com/KyleKing) in
[https://github.com/KyleKing/mdformat-mkdocs/pull/44](https://redirect.github.com/KyleKing/mdformat-mkdocs/pull/44)

**Full Changelog**:
https://github.com/KyleKing/mdformat-mkdocs/compare/v3.1.1...v4.0.0

</details>

---

### Configuration

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Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/astral-sh/ruff).

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---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Dhruv Manilawala <dhruvmanila@gmail.com>
Co-authored-by: Kyle King <KyleKing@users.noreply.github.com>

docs/editors/migration.md

@@ -4,6 +4,7 @@ While `ruff server` supports the same feature set as [`ruff-lsp`](https://github
 `ruff server` may require changes to your Ruff or language server configuration.
 
 !!! note
+
     The [VS Code extension](https://github.com/astral-sh/ruff-vscode) settings include documentation to indicate which
     settings are supported by `ruff server`. As such, this migration guide is primarily targeted at editors that lack
     explicit documentation for `ruff server` settings, such as Helix or Neovim.
@@ -20,6 +21,7 @@ Several `ruff-lsp` settings are not supported by `ruff server`. These are, as fo
 - `path`
 
 !!! note
+
     Some of these settings, like `interpreter` and `path`, are still accepted by the VS Code
     extension. `path`, in particular, can be used to specify a dedicated binary to use when
     initializing `ruff server`. But the language server itself will no longer accept such settings.